Like, one or two single parents gets arranged by their children :)

Unforgettable Love

Devil In Law (Kid is an infant,they marry cause of it)

Fanletter, Please

Marn Bang Jai 

My Dear Lady  (not entirely sure,dont remember it that well)

  • Ten Miles of Peach Blossoms - bio child recognized his mom who has amnesia and calls her mom
  • Stepmother and daughter Blues - the special episode, has teenage daughter play matchmaker for mom with guy who is smitten with her

https://mydramalist.com/23812-ecchan

Ecchan - set in 1935, little girl tries to find a nice lady to marry her songwriter father