Please improve the consistency in the paragraph:
During their absence, his grandmother, Blanche of Castile, acted as regent. When grandmother died in 1252, his parents were still crusading and the eight-year-old Louis was appointed regent.
During their absence, his grandmother, Blanche of Castile, acted as regent. However, when she died in 1252, his parents were still crusading and the eight-year-old Louis was appointed regent.