DH: FN and MN are common biblical names that start with the same letter, LN is Irish
DW: FN was Top 10 in 1936 (
https://www.behindthename.com/top/lists/united-states/1936), MN has 3 letters, Maiden LN is one of the German (Austrian) Submitted Surnames (
https://surnames.behindthename.com/submit/names/usage/german-austrian)
DD1: FN means “girl” (
https://www.behindthename.com/names/gender/feminine/meaning/girl), MN is the name of a US first lady (
https://www.behindthename.com/names/tag/first_ladies_of_the_usa)
DS1: FN is one syllable and has never been out of the US top 1000 (
https://www.behindthename.com/names/gender/masculine/syllables/1/tag/never_out_of_the_us_top_1000), MN is a Mad Men character (
https://www.behindthename.com/names/gender/masculine/tag/mad_men_characters)
DS2: FN is father’s FN, MN is masculine form of mother’s FN
DS3: FN begins with same letter as his father’s, MN is a 4 letter Irish name
DS4: FN and MN are books in the bible (
https://www.behindthename.com/names/tag/books_of_the_bible)
DD2: FN is a diminutive of a biblical name, MN is filler
DS5: FN is a Power Rangers character (
https://www.behindthename.com/names/gender/masculine/tag/power_rangers_characters), MN has multiple common spellings
DD3: FN was between 30-45 in 1971 (
https://www.behindthename.com/top/lists/united-states/1971), MN is a Golden Girls character (
https://www.behindthename.com/names/gender/feminine/tag/the_golden_girls_characters)