Ivory 'Deek' Watson was an ex Ink Spot who started his own Ink Spots, until he had to drop the name to become The Brown Dots, forerunners of The Four Tunes of Three Little Chickens fame (see there).
Brown Dots [as For Sentimental Reasons; vocal: Jimmy Nabbie; credited to Deek Watson/Pat Best]
King Cole Trio [n°1 US as (I Love You) For Sentimental Reasons]
Eddy Howard [idem; n°2 US]
Ella Fitzgerald [idem]
Dinah Shore [idem; n°2 US]
Chats Sauvages [as Sans raison]
James Brown [as a ballad and in '75 in a disco arrangement]
Linda Ronstadt [title track lp]
Rod Stewart [all as For Sentimental Reasons or (I Love You) For Sentimental Reasons]
Pat Best regained rights on his song in 2000. Not to be confused with For Sentimental Reasons, written by Abner Silver/Al Sherman/Edward Heyman, first cut by Kay Kyser ('36 - Brunswick) and covered by Mildred Bailey ('36), Tommy Dorsey ('36) and Danny Kortchmar ('72).