Medlands and Wikipedia disagree on the dates of Manfredo II Lancia, marchese di Busca

Medlands:

MANFREDO [I] "Lancia", son of GUGLIELMO Marchese di Busca & his wife --- (-after 30 Aug 1187). Marchese di Busca. m ---.

1. MANFREDO [II] (-[1214/15]). Marchese di Busca. m BIANCA Maletta, daughter of GUGLIELMO Maletta - had eight children:

a) MANFREDO [III] (-killed Asti 1248). "Dominus Mainfredus Lancea" ordered "domino Ogerio de Montefalcone" to swear allegiance to Manfredo III Marchese di Saluzzo by charter dated 17 Sep 1217[825]. " m ---. had three children:

i) MANFREDO [IV] (-[1277]). Conte di Cammarata. m ALBERADA

https://fmg.ac/Projects/MedLands/MONFERRATO,%20SALUZZO,%20SAVONA.ht...

Wikipedia:

Manfredo [1] II Lancia or Lança ( 1185/1195 – Asti , 1257 or 1258 ) was Marquis of Busca , eldest son of Manfredi I ( c. 1140 – post 1214 )
https://it.wikipedia.org/wiki/Manfredo_II_Lancia / https://it.wikipedia.org/wiki/Manfredo_I_Lancia