Folke "Filbyter" is my 26th great grandfather as well.
Me
→ Kjartan Jón Hjartarson
your father → Hjörtur Jónsson
his father → Ingibjörg Jónsdóttir
his mother → Jón Jónsson
her father → Jón Erlendsson
his father → Erlendur Jónsson
his father → Jón Ísleifsson
his father → Ísleifur Jósefsson
his father → Sigríður Ísleifsdóttir
his mother → Sesselja Magnúsdóttir
her mother → Ragnheiður Eggertsdóttir
her mother → Eggert Hannesson
her father → Hannes Hans Eggertsson
his father → Eggert Eggertssen
his father → Eggert Bydelsbak
his father → Albrecht Bydelsbak
his father → Valdemar Sappi Bydelsbak
his father → Erik Valdemarsen, Sappi
his father → Valdemar Eriksen Sappi
his father → Erik II von Schleswig
his father → Prinzessin Elizabeth, von Sachsen-Lauenburg
his mother → Ingeborg Birgersdotter, Folkunga
her mother → Jarl Birger Magnusson (Folkungaätten)
her father → Magnus Bengtsson Minnesköld (Folkungaätten)
his father → Jarl Bengt Folkesson Snivel
his father → Folke digre, Earl of Östergötland (Bjälboätten)
his father → Ingevald Folkesson
his father → Folke "Filbyter"
his father