Sir Henry Green, Chief Justice of the King's Bench - I see this in Table 57 of Stemmata Robertson, copy #43, from Scottish National Archives

Geni says, "Sir Henry Green, Chief Justice of the King's Bench is your 17th great grandfather. "

Sir Henry Green, Chief Justice of the King's Bench is your first cousin 21 times removed.
David Leff Clounch is your 16th cousin once removed.
I have found with all the merging of information being done by members, sometimes your relationship to an ancestor can change.

David

Note too that there are some inconsistencies related to that profile:

The age of Sir Nicholas de Greene exceeds 103 years.
The age of Henry de Green exceeds 103 years.
Thomas de Grene, 5th Lord of Boketon is under 14 years old for his marriage.
Amabilla de Greene born after the death of her mother Lucy (De La Zouche) Greene.

And this feeds right into the Green(e)-Mallory mess. It is known that Ela (Ala) Mallory, daughter to one of the Anketil Mallorys of Kirkby Mallory, married *someone* named Thomas Green(e), because the manor of Sudborough can be traced back and forth between Green(e) and Mallory hands.

The first transaction was a gift (in stages) from Anketil Mallory (uncertain whether he was her father or her brother) to Thomas Grene, spouse of Ala, probably as a wedding present or dowry or something of that ilk.

Thomas died, and his son John inherited the manor. John married a woman named Isabel (last name unknown), and they had a son named Thomas after his father. But John died while Thomas was still underage, and Sir William Mallory (son of one of the Anketils and grandson of another) used that as an excuse to take the manor back. (This is the one who held the manor of Papworth St. Agnes, inherited from an elderly childless relative.)

Sir William died in 1445, Isabel Grene brought suit to recover the property and succeeded, and Thomas Grene held it for a while.

Then Thomas Mallory of Papworth St. Agnes (son of Sir William and the #2 candidate for authorship of the Morte d'Arthur) grabbed it away again and held it until his own death in 1469.

At that time Thomas Grene recovered the manor and kept it.

A lot of people have jumped to the conclusion that the Grenes who married into the (Kirkby) Mallorys "must have been" of the Greenes of Boketon, and a great deal of confusion and misidentification has developed from that. If they were from the main line, Sir William and his son would have gotten their fingers burned when they got grabby. They may have been from a cadet branch, or no relation (Green(e) is a very common name).

Some of the confusions have included: identity of the wife of Ralph Green (Katherine (de) Clifton and not a Mallory at all), the identity of "Sir Thomas Greene, Lord of Isham", of his wife (supposedly an "Ela Malorie" of Dorset), and of "John Greene the Fugitive". (The people in quotation marks may possibly be Fictional - "John Greene" probably is.)

Barbara, Merging in general seems uncontrolled. Sometimes I enter a person and put a lot of data there, and *poof* that person disappears because of a merge I was unaware of, and all my data is gone. Plus src references. plus personal family stories that can come only from my relatives in printed material. i think I may also have lost notes I made about letters from officials at national archives. I suspect it is not curators doing this. I also see very aggressive people telling me all my records are wrong, and they want permission to just go edit them. I guess I could keep it all private, and lose collaboration? Its a devil's bargain.
I like wikitree. They require training and certification for pre-1700 work. Good idea! I have a lot of relatives that wont use geni because of all this, so they don't help. I am also finding I have to become a paid member of all the boards because all the trees in them are different. There is a scam factor here. ;)