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