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We investigate the star formation history of the IC1396 region by studyingits kinematics and completing the population census. We use multiwavelengthdata, combining optical spectroscopy (to identify and classify new members),near-infrared photometry (to trace shocks, jets, and outflows and theinteractions between the cluster members and the cloud), along with Gaia EDR3to identify new potential members in the multidimensional propermotion/parallax space. The revised Gaia EDR3 distance is 925$\pm$73 pc,slightly closer than previously obtained with DR2. The Gaia data reveal fourdistinct subclusters in the region. These subclusters are consistent indistance but display differences in proper motion. This, with their agedifferences, hints towards a complex and varied star formation history. Gaiadata also unveil the intermediate-mass objects that tend to evade spectroscopicand disk surveys. Our analysis allows us to identify 334 new members. Weestimate an average age of $\sim$4 Myr, confirming previous age estimates. Withthe new members added to our study, we estimate a disk fraction of 28\%, lowerthan previous values, due to our method detecting mainly new, disklessintermediate-mass stars. We find age differences between the subclusters, whichevidences a complex star formation history with different episodes of starformation.

Star formation in IC1396: Kinematics and subcluster structure revealed by Gaia