Happy new year eveyone, wanting to find a marriage and birth/Bapt entry for the following ancestors

Marriage c1843-1848 James Gibbs to Louisa Poukley / Puckley or Pouclee given in their death certs as married in Jersey, Channel Islands. James is the son of James and louisa is the daughter of John and Louisa

Birth & Bapt for Mary Ann Sheard c1844 Fort Regent, St Helier daughter of John Shard. A drummer with the 19th Regiment and Ann Sheard nee Shearman. There is an entry on IGI, but wanting to confirm this if possibe many thanks
Murray