May be the same person who had a daughter who married Humphry Littlebury, also in my tree.
In the
Visitations of LIncolnshire, the most likely candidate is the Roger who married Ellen Inglebert and whose sister Isabel married Sir William Tirwitt. Note that Roger's daughter Alice married Robert Tyrwhit, the son of William Tyrwhitt of Kettleby. If this is right, then Alice's aunt was also her mother-in-law.
Magna Carta Ancestry has a Roger Kelke (p466, vol. 2), the son of Roger Kelke of Barnetby and Ellen Inglebert, and husband of Elizabeth de Lacy, so matching the Visitation. Confoundingly, this source describes the Roger, husband of Elizabeth de Lacy as the "grandson of Roger Kelk, the elder". That doesn't conform with the Visitation tree, where the pedigree (from Roger husband of Elizabeth de Lacy) is as follows:
Roger (who married Elizabeth de Lacy)->Roger Kelke (who married Ellen Inglebert)->William Kelke of Barnetby
i.e. Roger's grandfather is named William, not Roger.
Abt 1355 - 