John's in-laws, 4 letters
Lennon's in-laws, 4 letters
Sean and Yoko, 4 letters
Yoko and family, 4 letters
Yoko et al., 4 letters
Yoko's family, 4 letters
Yoko's paternal grandparents, 4 letters
Coffin Car, e.g., 7 letters
A genus of North American perennial herbs of the family Boraginaceae, 10 letters